http://forums.asp.net/28.aspxAll about building XML Web Services with ASP.NET - SOAP, WSDL, WCF, etc. <a href="http://aspadvice.com/SignUp/list.aspx?l=66&c=17" target="_blank">Email List</a>enCommunityServer 2007 SP1 (Build: 20510.895)http://forums.asp.net/thread/3274694.aspxSat, 04 Jul 2009 13:22:00 GMT4c671506-2930-414c-a40b-8bf57ded5924:3274694johnwsaunders3johnwsaunders30http://forums.asp.net/thread/3274694.aspxhttp://forums.asp.net/commentrss.aspx?SectionID=28&PostID=3274694<p>As Yaron said, the answer is no.</p><p>However, don&#39;t feel bad: it wouldn&#39;t matter, even if you could change it. .NET doesn&#39;t validate incoming XML against the schema in any case.<br /></p>http://forums.asp.net/thread/3272335.aspxThu, 02 Jul 2009 22:09:52 GMT4c671506-2930-414c-a40b-8bf57ded5924:3272335yaronn01yaronn010http://forums.asp.net/thread/3272335.aspxhttp://forums.asp.net/commentrss.aspx?SectionID=28&PostID=3272335<p>Class types are always either optional or nullable.</p><p>Read here:</p><p><a href="http://webservices20.blogspot.com/2008/11/web-services-xml-nullable-and-optional.html">http://webservices20.blogspot.com/2008/11/web-services-xml-nullable-and-optional.html</a></p>http://forums.asp.net/thread/3271535.aspxThu, 02 Jul 2009 14:05:36 GMT4c671506-2930-414c-a40b-8bf57ded5924:3271535wwwnetwwwnet0http://forums.asp.net/thread/3271535.aspxhttp://forums.asp.net/commentrss.aspx?SectionID=28&PostID=3271535<p>&nbsp;I have a webmethod which has string parameters passed to it. These are required parameters. But in the WSDL minOccurs is set to 0. Is there any way to change the default behaviour?</p>